Added system ssh as main executor. massh as fallback.

Cargo.lock

@@ -1111,7 +1111,7 @@ checksum = "436b050e76ed2903236f032a59761c1eb99e1b0aead2c257922771dab1fc8c78"
 
 [[package]]
 name = "rexec"
-version = "1.2.1"
+version = "1.3.0"
 dependencies = [
  "brace-expand",
  "clap 4.3.4",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rexec"
-version = "1.2.1"
+version = "1.3.0"
 readme = "https://github.com/house-of-vanity/rexec#readme"
 edition = "2021"
 description = "Parallel SSH executor"

src/main.rs

@@ -1,12 +1,13 @@
-#[macro_use]
 extern crate log;
 
 use std::collections::HashMap;
 use std::fs::read_to_string;
 use std::hash::Hash;
+use std::io::{BufRead, BufReader};
 use std::net::IpAddr;
-use std::process;
+use std::process::{self, Command, Stdio};
 use std::sync::{Arc, Mutex};
+use std::thread;
 
 use clap::Parser;
 use colored::*;
@@ -19,13 +20,15 @@ use question::{Answer, Question};
 use rayon::prelude::*;
 use regex::Regex;
 
-// Define args
+// Define command-line arguments using the clap library
 #[derive(Parser, Debug)]
 #[command(author = "AB ab@hexor.ru", version, about = "Parallel SSH executor in Rust", long_about = None)]
 struct Args {
+    /// Username for SSH connections (defaults to current system user)
     #[arg(short, long, default_value_t = whoami::username())]
     username: String,
 
+    /// Flag to use known_hosts file for server discovery instead of pattern expansion
     #[arg(
         short,
         long,
@@ -33,6 +36,8 @@ struct Args {
     )]
     known_hosts: bool,
 
+    /// Server name patterns with expansion syntax
+    /// Examples: 'web-[1:12]-io-{prod,dev}' expands to multiple servers
     #[arg(
         short,
         long,
@@ -41,12 +46,15 @@ struct Args {
     )]
     expression: Vec<String>,
 
+    /// Command to execute on each server
     #[arg(short, long, help = "Command to execute on servers")]
     command: String,
 
+    /// Display only exit codes without command output
     #[arg(long, default_value_t = false, help = "Show exit code ONLY")]
     code: bool,
 
+    /// Skip confirmation prompt before executing commands
     #[arg(
         short = 'f',
         long,
@@ -55,21 +63,112 @@ struct Args {
     )]
     noconfirm: bool,
 
+    /// Maximum number of parallel SSH connections
     #[arg(short, long, default_value_t = 100)]
     parallel: i32,
+    
+    /// Use the embedded SSH client library instead of system SSH command
+    #[arg(
+        long,
+        help = "Use embedded SSH client instead of system SSH. Does not support 'live output'.",
+        default_value_t = false,
+    )]
+    embedded_ssh: bool,
 }
 
-// Represent line from known_hosts file
+/// Host representation for both known_hosts entries and expanded patterns
 #[derive(Debug, Default, Clone, PartialEq, Eq, Hash)]
 struct Host {
+    /// Hostname or IP address as a string
     name: String,
+    /// Resolved IP address (if available)
     ip: Option<IpAddr>,
 }
 
-// Read known_hosts file
+/// Find common domain suffix across all hostnames to simplify output display
+/// 
+/// This function analyzes all hostnames to identify a common domain suffix
+/// which can be shortened during display to improve readability.
+/// 
+/// # Arguments
+/// * `hostnames` - A slice of strings containing all server hostnames
+/// 
+/// # Returns
+/// * `Option<String>` - The common suffix if found, or None
+fn find_common_suffix(hostnames: &[String]) -> Option<String> {
+    if hostnames.is_empty() {
+        return None;
+    }
+    
+    // Don't truncate if only one host
+    if hostnames.len() == 1 {
+        return None;
+    }
+    
+    let first = &hostnames[0];
+    
+    // Start with assumption that the entire first hostname is the common suffix
+    let mut common = first.clone();
+    
+    // Iterate through remaining hostnames, reducing the common part
+    for hostname in hostnames.iter().skip(1) {
+        // Exit early if no common part remains
+        if common.is_empty() {
+            return None;
+        }
+        
+        // Find common suffix with current hostname
+        let mut new_common = String::new();
+        
+        // Search for common suffix by comparing characters from right to left
+        let mut common_chars = common.chars().rev();
+        let mut hostname_chars = hostname.chars().rev();
+        
+        loop {
+            match (common_chars.next(), hostname_chars.next()) {
+                (Some(c1), Some(c2)) if c1 == c2 => new_common.insert(0, c1),
+                _ => break,
+            }
+        }
+        
+        common = new_common;
+    }
+    
+    // Ensure the common part is a valid domain suffix (starts with a dot)
+    if common.is_empty() || !common.starts_with('.') {
+        return None;
+    }
+    
+    // Return the identified common suffix
+    Some(common)
+}
+
+/// Shorten hostname by removing the common suffix and replacing with an asterisk
+/// 
+/// # Arguments
+/// * `hostname` - The original hostname
+/// * `common_suffix` - Optional common suffix to remove
+/// 
+/// # Returns
+/// * `String` - Shortened hostname or original if no common suffix
+fn shorten_hostname(hostname: &str, common_suffix: &Option<String>) -> String {
+    match common_suffix {
+        Some(suffix) if hostname.ends_with(suffix) => {
+            let short_name = hostname[..hostname.len() - suffix.len()].to_string();
+            format!("{}{}", short_name, "*")
+        },
+        _ => hostname.to_string(),
+    }
+}
+
+/// Read and parse the SSH known_hosts file to extract server names
+/// 
+/// # Returns
+/// * `Vec<Host>` - List of hosts found in the known_hosts file
 fn read_known_hosts() -> Vec<Host> {
     let mut result: Vec<Host> = Vec::new();
 
+    // Read known_hosts file from the user's home directory
     for line in read_to_string(format!("/home/{}/.ssh/known_hosts", whoami::username()))
         .unwrap()
         .lines()
@@ -84,18 +183,45 @@ fn read_known_hosts() -> Vec<Host> {
     result
 }
 
+/// Expand a numeric range in the format [start:end] to a list of strings
+/// 
+/// # Arguments
+/// * `start` - Starting number (inclusive)
+/// * `end` - Ending number (inclusive)
+/// 
+/// # Returns
+/// * `Vec<String>` - List of numbers as strings
 fn expand_range(start: i32, end: i32) -> Vec<String> {
     (start..=end).map(|i| i.to_string()).collect()
 }
 
+/// Expand a comma-separated list in the format {item1,item2,item3} to a list of strings
+/// 
+/// # Arguments
+/// * `list` - Comma-separated string to expand
+/// 
+/// # Returns
+/// * `Vec<String>` - List of expanded items
 fn expand_list(list: &str) -> Vec<String> {
     list.split(',').map(|s| s.to_string()).collect()
 }
 
+/// Expand a server pattern string with range and list notation into individual hostnames
+/// 
+/// Supports two expansion types:
+/// - Range expansion: server-[1:5] → server-1, server-2, server-3, server-4, server-5
+/// - List expansion: server-{prod,dev} → server-prod, server-dev
+/// 
+/// # Arguments
+/// * `s` - Pattern string to expand
+/// 
+/// # Returns
+/// * `Vec<Host>` - List of expanded Host objects
 fn expand_string(s: &str) -> Vec<Host> {
     let mut hosts: Vec<Host> = Vec::new();
     let mut result = vec![s.to_string()];
 
+    // First expand all range expressions [start:end]
     while let Some(r) = result.iter().find(|s| s.contains('[')) {
         let r = r.clone();
         let start = r.find('[').unwrap();
@@ -122,6 +248,7 @@ fn expand_string(s: &str) -> Vec<Host> {
         }
     }
 
+    // Then expand all list expressions {item1,item2}
     while let Some(r) = result.iter().find(|s| s.contains('{')) {
         let r = r.clone();
         let start = r.find('{').unwrap();
@@ -140,6 +267,7 @@ fn expand_string(s: &str) -> Vec<Host> {
         }
     }
 
+    // Convert all expanded strings to Host objects
     for hostname in result {
         hosts.push(Host {
             name: hostname.to_string(),
@@ -149,14 +277,263 @@ fn expand_string(s: &str) -> Vec<Host> {
     hosts
 }
 
+/// Execute a command on a single host using the system SSH client
+/// 
+/// This function runs an SSH command using the system's SSH client,
+/// capturing and displaying output in real-time with proper formatting.
+/// 
+/// # Arguments
+/// * `hostname` - Target server hostname
+/// * `username` - SSH username
+/// * `command` - Command to execute
+/// * `common_suffix` - Optional common suffix for hostname display formatting
+/// 
+/// # Returns
+/// * `Result<i32, String>` - Exit code on success or error message
+fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suffix: &Option<String>) -> Result<i32, String> {
+    let display_name = shorten_hostname(hostname, common_suffix);
+    
+    // Display execution start message with shortened hostname
+    println!("\n{} - STARTED", display_name.yellow().bold());
+    
+    // Build the SSH command with appropriate options
+    let mut ssh_cmd = Command::new("ssh");
+    ssh_cmd.arg("-o").arg("StrictHostKeyChecking=no")
+         .arg("-o").arg("BatchMode=yes")
+         .arg(format!("{}@{}", username, hostname))
+         .arg(command)
+         .stdout(Stdio::piped())
+         .stderr(Stdio::piped());
+    
+    // Execute the command
+    let mut child = match ssh_cmd.spawn() {
+        Ok(child) => child,
+        Err(e) => return Err(format!("Failed to start SSH process: {}", e)),
+    };
+    
+    // Capture and display stdout in real-time using a dedicated thread
+    let stdout = child.stdout.take().unwrap();
+    let display_name_stdout = display_name.clone();
+    let stdout_thread = thread::spawn(move || {
+        let reader = BufReader::new(stdout);
+        let prefix = format!("{}", "│".green());
+        
+        for line in reader.lines() {
+            match line {
+                Ok(line) => println!("{} {} - {}", prefix, display_name_stdout.yellow(), line),
+                Err(_) => break,
+            }
+        }
+    });
+    
+    // Capture and display stderr in real-time using a dedicated thread
+    let stderr = child.stderr.take().unwrap();
+    let display_name_stderr = display_name.clone();
+    let stderr_thread = thread::spawn(move || {
+        let reader = BufReader::new(stderr);
+        let prefix = format!("{}", "║".red());
+        
+        for line in reader.lines() {
+            match line {
+                Ok(line) => println!("{} {} - {}", prefix, display_name_stderr.yellow(), line),
+                Err(_) => break,
+            }
+        }
+    });
+    
+    // Wait for command to complete
+    let status = match child.wait() {
+        Ok(status) => status,
+        Err(e) => return Err(format!("Failed to wait for SSH process: {}", e)),
+    };
+    
+    // Wait for stdout and stderr threads to complete
+    stdout_thread.join().unwrap();
+    stderr_thread.join().unwrap();
+    
+    // Format exit code with color (green for success, red for failure)
+    let exit_code = status.code().unwrap_or(-1);
+    let code_string = if exit_code == 0 {
+        format!("{}", exit_code.to_string().green())
+    } else {
+        format!("{}", exit_code.to_string().red())
+    };
+    
+    // Display completion message
+    println!("{} - COMPLETED (Exit code: [{}])", display_name.yellow().bold(), code_string);
+    
+    Ok(exit_code)
+}
+
+/// Execute commands on multiple hosts using the massh library (embedded SSH)
+/// 
+/// This function handles batch processing of hosts to maintain the original order
+/// while executing commands in parallel using the massh library.
+/// 
+/// # Arguments
+/// * `hosts` - Vector of (hostname, IP address, original index) tuples
+/// * `username` - SSH username
+/// * `command` - Command to execute
+/// * `parallel` - Maximum number of parallel connections
+/// * `code_only` - Whether to display only exit codes
+/// * `common_suffix` - Optional common suffix for hostname display formatting
+fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command: &str, parallel: i32, code_only: bool, common_suffix: &Option<String>) {
+    // Create a lookup table for host data using IP addresses as keys
+    let mut hosts_and_ips: HashMap<IpAddr, (String, usize)> = HashMap::new();
+    let mut massh_hosts: Vec<MasshHostConfig> = Vec::new();
+
+    for (hostname, ip, idx) in hosts {
+        hosts_and_ips.insert(*ip, (hostname.clone(), *idx));
+        massh_hosts.push(MasshHostConfig {
+            addr: *ip,
+            auth: None,
+            port: None,
+            user: None,
+        });
+    }
+
+    // Process hosts in batches to respect parallelism setting while maintaining order
+    let batch_size = parallel as usize;
+    let mut processed = 0;
+
+    while processed < massh_hosts.len() {
+        let end = std::cmp::min(processed + batch_size, massh_hosts.len());
+        
+        // Create a new config and vector for this batch
+        let mut batch_hosts = Vec::new();
+        for host in &massh_hosts[processed..end] {
+            batch_hosts.push(MasshHostConfig {
+                addr: host.addr,
+                auth: None,
+                port: None,
+                user: None,
+            });
+        }
+        
+        // Create a new MasshClient for this batch with appropriate configuration
+        let batch_config = MasshConfig {
+            default_auth: SshAuth::Agent,
+            default_port: 22,
+            default_user: username.to_string(),
+            threads: batch_hosts.len() as u64,
+            timeout: 0,
+            hosts: batch_hosts,
+        };
+        
+        let batch_massh = MasshClient::from(&batch_config);
+        
+        // Execute the command on all hosts in this batch
+        let rx = batch_massh.execute(command.to_string());
+        
+        // Collect all results from this batch before moving to the next
+        let mut batch_results = Vec::new();
+        
+        while let Ok((host, result)) = rx.recv() {
+            // Extract IP address from the massh result
+            let ip: String = host.split('@').collect::<Vec<_>>()[1]
+                .split(':')
+                .collect::<Vec<_>>()[0]
+                .to_string();
+            let ip = ip.parse::<IpAddr>().unwrap();
+            
+            // Lookup the original hostname and index
+            if let Some((hostname, idx)) = hosts_and_ips.get(&ip) {
+                batch_results.push((hostname.clone(), ip, result, *idx));
+            } else {
+                error!("Unexpected IP address in result: {}", ip);
+            }
+        }
+        
+        // Sort results by original index to maintain consistent display order
+        batch_results.sort_by_key(|(_, _, _, idx)| *idx);
+        
+        // Display results for each host in the batch
+        for (hostname, _ip, result, _) in batch_results {
+            let display_name = shorten_hostname(&hostname, common_suffix);
+            
+            // Display hostname with consistent formatting
+            println!("\n{}", display_name.yellow().bold().to_string());
+            
+            // Handle execution result
+            let output = match result {
+                Ok(output) => output,
+                Err(e) => {
+                    error!("Can't access server: {}", e);
+                    continue;
+                }
+            };
+            
+            // Format exit code with color
+            let code_string = if output.exit_status == 0 {
+                format!("{}", output.exit_status.to_string().green())
+            } else {
+                format!("{}", output.exit_status.to_string().red())
+            };
+            
+            // Display summary of command execution
+            println!(
+                "{}",
+                format!(
+                    "Exit code [{}] / stdout {} bytes / stderr {} bytes",
+                    code_string,
+                    output.stdout.len(),
+                    output.stderr.len()
+                )
+                .bold()
+            );
+
+            // Display command output if not in code-only mode
+            if !code_only {
+                // Display stdout with appropriate formatting
+                match String::from_utf8(output.stdout) {
+                    Ok(stdout) => match stdout.as_str() {
+                        "" => {}
+                        _ => {
+                            let prefix = if output.exit_status != 0 {
+                                format!("{}", "│".cyan())
+                            } else {
+                                format!("{}", "│".green())
+                            };
+                            for line in stdout.lines() {
+                                println!("{} {} - {}", prefix, display_name.yellow(), line);
+                            }
+                        }
+                    },
+                    Err(_) => {}
+                }
+                // Display stderr with appropriate formatting
+                match String::from_utf8(output.stderr) {
+                    Ok(stderr) => match stderr.as_str() {
+                        "" => {}
+                        _ => {
+                            for line in stderr.lines() {
+                                println!("{} {} - {}", "║".red(), display_name.yellow(), line);
+                            }
+                        }
+                    },
+                    Err(_) => {}
+                }
+            }
+        }
+        
+        processed = end;
+    }
+}
+
+/// Main entry point for the application
 fn main() {
+    // Initialize logging with minimal formatting (no timestamp, no target)
     env_logger::Builder::from_env(Env::default().default_filter_or("info"))
         .format_timestamp(None)
         .format_target(false)
         .init();
+    
+    // Parse command-line arguments
     let args = Args::parse();
 
+    // Build the list of target hosts based on user selection method
     let hosts = if args.known_hosts {
+        // Use regex pattern matching against known_hosts file
         info!("Using ~/.ssh/known_hosts to build server list.");
         let known_hosts = read_known_hosts();
         let mut all_hosts = Vec::new();
@@ -177,6 +554,7 @@ fn main() {
         }
         all_hosts
     } else {
+        // Use pattern expansion syntax (ranges and lists)
         info!("Using string expansion to build server list.");
         let mut all_hosts = Vec::new();
         for expression in args.expression.iter() {
@@ -185,10 +563,10 @@ fn main() {
         all_hosts
     };
 
-    // Dedup hosts from known_hosts file but preserve original order
+    // Remove duplicate hosts while preserving original order
     let matched_hosts: Vec<_> = hosts.into_iter().unique().collect();
 
-    // Build MasshHostConfig hostnames list
+    // Log parallelism setting if not using the default
     if args.parallel != 100 {
         warn!("Parallelism: {} thread{}", &args.parallel, {
             if args.parallel != 1 {
@@ -199,7 +577,7 @@ fn main() {
         });
     }
 
-    // Store hosts with their indices to preserve order
+    // Store hosts with their original indices to preserve ordering
     let mut host_with_indices: Vec<(Host, usize)> = Vec::new();
     for (idx, host) in matched_hosts.iter().enumerate() {
         host_with_indices.push((host.clone(), idx));
@@ -207,7 +585,8 @@ fn main() {
 
     info!("Matched hosts:");
     
-    // Do DNS resolution in parallel but store results for ordered display later
+    // Perform DNS resolution for all hosts in parallel
+    // Results are stored with original indices to maintain order
     let resolved_ips_with_indices = Arc::new(Mutex::new(Vec::<(String, IpAddr, usize)>::new()));
 
     host_with_indices.par_iter().for_each(|(host, idx)| {
@@ -228,11 +607,11 @@ fn main() {
         }
     });
 
-    // Sort by original index to ensure hosts are displayed in order
+    // Sort hosts by original index to maintain consistent display order
     let mut resolved_hosts = resolved_ips_with_indices.lock().unwrap().clone();
     resolved_hosts.sort_by_key(|(_, _, idx)| *idx);
     
-    // Now print the hosts in the correct order
+    // Display all matched hosts with their resolved IPs
     for (hostname, ip, _) in &resolved_hosts {
         if ip.is_unspecified() {
             error!("DNS resolve failed: {}", hostname.red());
@@ -241,156 +620,85 @@ fn main() {
         }
     }
 
-    // Create massh_hosts in the correct order
+    // Filter out hosts that couldn't be resolved
-    let mut hosts_and_ips: HashMap<IpAddr, (String, usize)> = HashMap::new();
+    let valid_hosts: Vec<(String, IpAddr, usize)> = resolved_hosts
-    let mut massh_hosts: Vec<MasshHostConfig> = Vec::new();
+        .into_iter()
+        .filter(|(_, ip, _)| !ip.is_unspecified())
+        .collect();
 
-    for (hostname, ip, idx) in resolved_hosts {
+    // Exit if no valid hosts remain
-        // Skip hosts that couldn't be resolved
+    if valid_hosts.is_empty() {
-        if !ip.is_unspecified() {
+        error!("No valid hosts to connect to");
-            hosts_and_ips.insert(ip, (hostname.clone(), idx));
+        process::exit(1);
-            massh_hosts.push(MasshHostConfig {
+    }
-                addr: ip,
+    
-                auth: None,
+    // Find common domain suffix to optimize display
-                port: None,
+    let hostnames: Vec<String> = valid_hosts.iter().map(|(hostname, _, _)| hostname.clone()).collect();
-                user: None,
+    let common_suffix = find_common_suffix(&hostnames);
-            });
+    
+    // Inform user about display optimization if common suffix found
+    if let Some(suffix) = &common_suffix {
+        info!("Common domain suffix found: '{}' (will be displayed as '*')", suffix);
+    }
+    
+    // Ask for confirmation before proceeding (unless --noconfirm is specified)
+    if !args.noconfirm
+        && match Question::new(&*format!(
+            "Continue on following {} servers?",
+            &valid_hosts.len()
+        ))
+        .confirm()
+        {
+            Answer::YES => true,
+            Answer::NO => {
+                warn!("Stopped");
+                process::exit(0);
+            }
+            _ => unreachable!(),
         }
+    {
+        info!("Run command on {} servers.", &valid_hosts.len());
     }
 
-    // Process hosts in batches to maintain order
+    // Execute commands using selected method (system SSH or embedded library)
-    let batch_size = args.parallel as usize;
+    if !args.embedded_ssh {
-    
+        // Use system SSH client (default behavior)
-    // Ask for confirmation
+        let batch_size = args.parallel as usize;
-    if !massh_hosts.is_empty()
-        && (args.noconfirm
-            || match Question::new(&*format!(
-                "Continue on following {} servers?",
-                &massh_hosts.len()
-            ))
-            .confirm()
-            {
-                Answer::YES => true,
-                Answer::NO => false,
-                _ => unreachable!(),
-            })
-    {
-        info!("Run command on {} servers.", &massh_hosts.len());
-
         let mut processed = 0;
-
+        
-        while processed < massh_hosts.len() {
+        while processed < valid_hosts.len() {
-            let end = std::cmp::min(processed + batch_size, massh_hosts.len());
+            let end = std::cmp::min(processed + batch_size, valid_hosts.len());
+            let batch = &valid_hosts[processed..end];
             
-            // Create a new config and vector for this batch
+            // Create a thread for each host in the current batch
-            let mut batch_hosts = Vec::new();
+            let mut handles = Vec::new();
-            for host in &massh_hosts[processed..end] {
+            
-                batch_hosts.push(MasshHostConfig {
+            for (hostname, _, _) in batch {
-                    addr: host.addr,
+                let hostname = hostname.clone();
-                    auth: None,
+                let username = args.username.clone();
-                    port: None,
+                let command = args.command.clone();
-                    user: None,
+                let common_suffix_clone = common_suffix.clone();
+                
+                // Execute SSH command in a separate thread
+                let handle = thread::spawn(move || {
+                    match execute_ssh_command(&hostname, &username, &command, &common_suffix_clone) {
+                        Ok(_) => (),
+                        Err(e) => error!("Error executing command on {}: {}", hostname, e),
+                    }
                 });
+                
+                handles.push(handle);
             }
             
-            // Create a new MasshClient for this batch
+            // Wait for all threads in this batch to complete
-            let batch_config = MasshConfig {
+            for handle in handles {
-                default_auth: SshAuth::Agent,
+                handle.join().unwrap();
-                default_port: 22,
-                default_user: args.username.clone(),
-                threads: batch_hosts.len() as u64,
-                timeout: 0,
-                hosts: batch_hosts,
-            };
-            
-            let batch_massh = MasshClient::from(&batch_config);
-            
-            // Run commands on this batch
-            let rx = batch_massh.execute(args.command.clone());
-            
-            // Collect all results from this batch before moving to the next
-            let mut batch_results = Vec::new();
-            
-            while let Ok((host, result)) = rx.recv() {
-                let ip: String = host.split('@').collect::<Vec<_>>()[1]
-                    .split(':')
-                    .collect::<Vec<_>>()[0]
-                    .to_string();
-                let ip = ip.parse::<IpAddr>().unwrap();
-                
-                if let Some((hostname, idx)) = hosts_and_ips.get(&ip) {
-                    batch_results.push((hostname.clone(), ip, result, *idx));
-                } else {
-                    error!("Unexpected IP address in result: {}", ip);
-                }
-            }
-            
-            // Sort the batch results by index to ensure they're displayed in order
-            batch_results.sort_by_key(|(_, _, _, idx)| *idx);
-            
-            // Display the results
-            for (hostname, _ip, result, _) in batch_results {
-                println!("\n{}", hostname.yellow().bold().to_string());
-                
-                let output = match result {
-                    Ok(output) => output,
-                    Err(e) => {
-                        error!("Can't access server: {}", e);
-                        continue;
-                    }
-                };
-                
-                let code_string = if output.exit_status == 0 {
-                    format!("{}", output.exit_status.to_string().green())
-                } else {
-                    format!("{}", output.exit_status.to_string().red())
-                };
-                
-                println!(
-                    "{}",
-                    format!(
-                        "Exit code [{}] / stdout {} bytes / stderr {} bytes",
-                        code_string,
-                        output.stdout.len(),
-                        output.stderr.len()
-                    )
-                    .bold()
-                );
-
-                if !args.code {
-                    match String::from_utf8(output.stdout) {
-                        Ok(stdout) => match stdout.as_str() {
-                            "" => {}
-                            _ => {
-                                let prefix = if output.exit_status != 0 {
-                                    format!("{}", "│".cyan())
-                                } else {
-                                    format!("{}", "│".green())
-                                };
-                                for line in stdout.lines() {
-                                    println!("{} {}", prefix, line);
-                                }
-                            }
-                        },
-                        Err(_) => {}
-                    }
-                    match String::from_utf8(output.stderr) {
-                        Ok(stderr) => match stderr.as_str() {
-                            "" => {}
-                            _ => {
-                                for line in stderr.lines() {
-                                    println!("{} {}", "║".red(), line);
-                                }
-                            }
-                        },
-                        Err(_) => {}
-                    }
-                }
             }
             
             processed = end;
         }
     } else {
-        warn!("Stopped");
+        // Use the embedded massh library implementation
+        execute_with_massh(&valid_hosts, &args.username, &args.command, args.parallel, args.code, &common_suffix);
     }
 }